York DM090 User Manual

INSTALLATION
MANUAL

CAUTION:

READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

SINGLE PACKAGE AIR CONDITIONERS AND

SINGLE PACKAGE ELECTRIC UNITS

DM090, 120 and 150

7-1/2 TO 12-1/2 TON

(380V, 3 Phase, 60 HZ)

035-17311-003-A-0704

NOTES, CAUTIONS AND WARNINGS

The installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given
to prevent equipment damage. Warnings are given to alert
installer that personal injury and/or equipment damage
may result if installation procedure is not handled properly.

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . .5

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

REFERENCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

APPROVALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

START-UP (COOLING). . . . . . . . . . . . . . . . . . . . . . . . . .37

NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . .39

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . .39

See following pages for a complete Table of Contents.